| 摘要 |
PROBLEM TO BE SOLVED: To improve the lubricating performance of a cylinder liner by filling oil grooves with a small quantity of oil. SOLUTION: In a cylinder liner 1 for an internal combustion engine with oil grooves 2 on the slide surface, the pitch of the oil grooves 2 on the slide surface of the cylinder liner 1 is 30-60% of the width of a piston ring 5, the width of the flat portion 3 is 50-99% of the pitch of the oil grooves 2 and the depth of the oil grooves is 0.5-6μm, the flat portion 3 having machined divisions 3a ground at a right angle to the moving direction 4 of a piston.
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